shibsp/attribute/resolver/impl/QueryAttributeResolver.cpp

   1 /*
   2  *  Copyright 2001-2009 Internet2
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 /**
  18  * QueryAttributeResolver.cpp
  19  *
  20  * AttributeResolver based on SAML queries.
  21  */
  22
  23 #include "internal.h"
  24 #include "Application.h"
  25 #include "ServiceProvider.h"
  26 #include "SessionCache.h"
  27 #include "attribute/Attribute.h"
  28 #include "attribute/filtering/AttributeFilter.h"
  29 #include "attribute/filtering/BasicFilteringContext.h"
  30 #include "attribute/resolver/AttributeExtractor.h"
  31 #include "attribute/resolver/AttributeResolver.h"
  32 #include "attribute/resolver/ResolutionContext.h"
  33 #include "binding/SOAPClient.h"
  34 #include "metadata/MetadataProviderCriteria.h"
  35 #include "util/SPConstants.h"
  36
  37 #include <saml/exceptions.h>
  38 #include <saml/binding/SecurityPolicy.h>
  39 #include <saml/saml1/binding/SAML1SOAPClient.h>
  40 #include <saml/saml1/core/Assertions.h>
  41 #include <saml/saml1/core/Protocols.h>
  42 #include <saml/saml2/binding/SAML2SOAPClient.h>
  43 #include <saml/saml2/core/Protocols.h>
  44 #include <saml/saml2/metadata/Metadata.h>
  45 #include <saml/saml2/metadata/MetadataProvider.h>
  46 #include <xmltooling/util/NDC.h>
  47 #include <xmltooling/util/XMLHelper.h>
  48 #include <xercesc/util/XMLUniDefs.hpp>
  49
  50 using namespace shibsp;
  51 using namespace opensaml::saml1;
  52 using namespace opensaml::saml1p;
  53 using namespace opensaml::saml2;
  54 using namespace opensaml::saml2p;
  55 using namespace opensaml::saml2md;
  56 using namespace opensaml;
  57 using namespace xmltooling;
  58 using namespace std;
  59
  60 namespace shibsp {
  61
  62     class SHIBSP_DLLLOCAL QueryContext : public ResolutionContext
  63     {
  64     public:
  65         QueryContext(const Application& application, const Session& session)
  66                 : m_query(true), m_app(application), m_session(&session), m_metadata(NULL), m_entity(NULL), m_nameid(NULL) {
  67             m_protocol = XMLString::transcode(session.getProtocol());
  68             m_class = XMLString::transcode(session.getAuthnContextClassRef());
  69             m_decl = XMLString::transcode(session.getAuthnContextDeclRef());
  70         }
  71
  72         QueryContext(
  73             const Application& application,
  74             const EntityDescriptor* issuer,
  75             const XMLCh* protocol,
  76             const NameID* nameid=NULL,
  77             const XMLCh* authncontext_class=NULL,
  78             const XMLCh* authncontext_decl=NULL,
  79             const vector<const opensaml::Assertion*>* tokens=NULL
  80             ) : m_query(true), m_app(application), m_session(NULL), m_metadata(NULL), m_entity(issuer),
  81                 m_protocol(protocol), m_nameid(nameid), m_class(authncontext_class), m_decl(authncontext_decl) {
  82
  83             if (tokens) {
  84                 for (vector<const opensaml::Assertion*>::const_iterator t = tokens->begin(); t!=tokens->end(); ++t) {
  85                     const saml2::Assertion* token2 = dynamic_cast<const saml2::Assertion*>(*t);
  86                     if (token2 && !token2->getAttributeStatements().empty()) {
  87                         m_query = false;
  88                     }
  89                     else {
  90                         const saml1::Assertion* token1 = dynamic_cast<const saml1::Assertion*>(*t);
  91                         if (token1 && !token1->getAttributeStatements().empty()) {
  92                             m_query = false;
  93                         }
  94                     }
  95                 }
  96             }
  97         }
  98
  99         ~QueryContext() {
 100             if (m_session) {
 101                 XMLString::release((XMLCh**)&m_protocol);
 102                 XMLString::release((XMLCh**)&m_class);
 103                 XMLString::release((XMLCh**)&m_decl);
 104             }
 105             if (m_metadata)
 106                 m_metadata->unlock();
 107             for_each(m_attributes.begin(), m_attributes.end(), xmltooling::cleanup<shibsp::Attribute>());
 108             for_each(m_assertions.begin(), m_assertions.end(), xmltooling::cleanup<opensaml::Assertion>());
 109         }
 110
 111         bool doQuery() const {
 112             return m_query;
 113         }
 114
 115         const Application& getApplication() const {
 116             return m_app;
 117         }
 118         const EntityDescriptor* getEntityDescriptor() const {
 119             if (m_entity)
 120                 return m_entity;
 121             if (m_session && m_session->getEntityID()) {
 122                 m_metadata = m_app.getMetadataProvider(false);
 123                 if (m_metadata) {
 124                     m_metadata->lock();
 125                     return m_entity = m_metadata->getEntityDescriptor(MetadataProviderCriteria(m_app, m_session->getEntityID())).first;
 126                 }
 127             }
 128             return NULL;
 129         }
 130         const XMLCh* getProtocol() const {
 131             return m_protocol;
 132         }
 133         const NameID* getNameID() const {
 134             return m_session ? m_session->getNameID() : m_nameid;
 135         }
 136         const XMLCh* getClassRef() const {
 137             return m_class;
 138         }
 139         const XMLCh* getDeclRef() const {
 140             return m_decl;
 141         }
 142         const Session* getSession() const {
 143             return m_session;
 144         }
 145         vector<shibsp::Attribute*>& getResolvedAttributes() {
 146             return m_attributes;
 147         }
 148         vector<opensaml::Assertion*>& getResolvedAssertions() {
 149             return m_assertions;
 150         }
 151
 152     private:
 153         bool m_query;
 154         const Application& m_app;
 155         const Session* m_session;
 156         mutable MetadataProvider* m_metadata;
 157         mutable const EntityDescriptor* m_entity;
 158         const XMLCh* m_protocol;
 159         const NameID* m_nameid;
 160         const XMLCh* m_class;
 161         const XMLCh* m_decl;
 162         vector<shibsp::Attribute*> m_attributes;
 163         vector<opensaml::Assertion*> m_assertions;
 164     };
 165
 166     class SHIBSP_DLLLOCAL QueryResolver : public AttributeResolver
 167     {
 168     public:
 169         QueryResolver(const DOMElement* e);
 170         ~QueryResolver() {
 171             for_each(m_SAML1Designators.begin(), m_SAML1Designators.end(), xmltooling::cleanup<AttributeDesignator>());
 172             for_each(m_SAML2Designators.begin(), m_SAML2Designators.end(), xmltooling::cleanup<saml2::Attribute>());
 173         }
 174
 175         Lockable* lock() {return this;}
 176         void unlock() {}
 177
 178         ResolutionContext* createResolutionContext(
 179             const Application& application,
 180             const EntityDescriptor* issuer,
 181             const XMLCh* protocol,
 182             const NameID* nameid=NULL,
 183             const XMLCh* authncontext_class=NULL,
 184             const XMLCh* authncontext_decl=NULL,
 185             const vector<const opensaml::Assertion*>* tokens=NULL,
 186             const vector<shibsp::Attribute*>* attributes=NULL
 187             ) const {
 188             return new QueryContext(application,issuer,protocol,nameid,authncontext_class,authncontext_decl,tokens);
 189         }
 190
 191         ResolutionContext* createResolutionContext(const Application& application, const Session& session) const {
 192             return new QueryContext(application,session);
 193         }
 194
 195         void resolveAttributes(ResolutionContext& ctx) const;
 196
 197         void getAttributeIds(vector<string>& attributes) const {
 198             // Nothing to do, only the extractor would actually generate them.
 199         }
 200
 201     private:
 202         bool SAML1Query(QueryContext& ctx) const;
 203         bool SAML2Query(QueryContext& ctx) const;
 204
 205         Category& m_log;
 206         string m_policyId;
 207         vector<AttributeDesignator*> m_SAML1Designators;
 208         vector<saml2::Attribute*> m_SAML2Designators;
 209     };
 210
 211     AttributeResolver* SHIBSP_DLLLOCAL QueryResolverFactory(const DOMElement* const & e)
 212     {
 213         return new QueryResolver(e);
 214     }
 215
 216     static const XMLCh _policyId[] = UNICODE_LITERAL_8(p,o,l,i,c,y,I,d);
 217 };
 218
 219 QueryResolver::QueryResolver(const DOMElement* e) : m_log(Category::getInstance(SHIBSP_LOGCAT".AttributeResolver.Query"))
 220 {
 221 #ifdef _DEBUG
 222     xmltooling::NDC ndc("QueryResolver");
 223 #endif
 224
 225     const XMLCh* pid = e ? e->getAttributeNS(NULL, _policyId) : NULL;
 226     if (pid && *pid) {
 227         auto_ptr_char temp(pid);
 228         m_policyId = temp.get();
 229     }
 230
 231     DOMElement* child = XMLHelper::getFirstChildElement(e);
 232     while (child) {
 233         try {
 234             if (XMLHelper::isNodeNamed(child, samlconstants::SAML20_NS, saml2::Attribute::LOCAL_NAME)) {
 235                 auto_ptr<XMLObject> obj(saml2::AttributeBuilder::buildOneFromElement(child));
 236                 saml2::Attribute* down = dynamic_cast<saml2::Attribute*>(obj.get());
 237                 if (down) {
 238                     m_SAML2Designators.push_back(down);
 239                     obj.release();
 240                 }
 241             }
 242             else if (XMLHelper::isNodeNamed(child, samlconstants::SAML1P_NS, AttributeDesignator::LOCAL_NAME)) {
 243                 auto_ptr<XMLObject> obj(AttributeDesignatorBuilder::buildOneFromElement(child));
 244                 AttributeDesignator* down = dynamic_cast<AttributeDesignator*>(obj.get());
 245                 if (down) {
 246                     m_SAML1Designators.push_back(down);
 247                     obj.release();
 248                 }
 249             }
 250         }
 251         catch (exception& ex) {
 252             m_log.error("exception loading attribute designator: %s", ex.what());
 253         }
 254         child = XMLHelper::getNextSiblingElement(child);
 255     }
 256 }
 257
 258 bool QueryResolver::SAML1Query(QueryContext& ctx) const
 259 {
 260 #ifdef _DEBUG
 261     xmltooling::NDC ndc("query");
 262 #endif
 263
 264     int version = XMLString::equals(ctx.getProtocol(), samlconstants::SAML11_PROTOCOL_ENUM) ? 1 : 0;
 265     const AttributeAuthorityDescriptor* AA =
 266         find_if(ctx.getEntityDescriptor()->getAttributeAuthorityDescriptors(), isValidForProtocol(ctx.getProtocol()));
 267     if (!AA) {
 268         m_log.warn("no SAML 1.%d AttributeAuthority role found in metadata", version);
 269         return false;
 270     }
 271
 272     const Application& application = ctx.getApplication();
 273     const PropertySet* relyingParty = application.getRelyingParty(ctx.getEntityDescriptor());
 274
 275     // Locate policy key.
 276     const char* policyId = m_policyId.empty() ? application.getString("policyId").second : m_policyId.c_str();
 277
 278     // Access policy properties.
 279     const PropertySet* settings = application.getServiceProvider().getPolicySettings(policyId);
 280     pair<bool,bool> validate = settings->getBool("validate");
 281
 282     shibsp::SecurityPolicy policy(application, NULL, validate.first && validate.second, policyId);
 283     policy.getAudiences().push_back(relyingParty->getXMLString("entityID").second);
 284     MetadataCredentialCriteria mcc(*AA);
 285     shibsp::SOAPClient soaper(policy);
 286
 287     auto_ptr_XMLCh binding(samlconstants::SAML1_BINDING_SOAP);
 288     saml1p::Response* response=NULL;
 289     const vector<AttributeService*>& endpoints=AA->getAttributeServices();
 290     for (vector<AttributeService*>::const_iterator ep=endpoints.begin(); !response && ep!=endpoints.end(); ++ep) {
 291         if (!XMLString::equals((*ep)->getBinding(),binding.get()) || !(*ep)->getLocation())
 292             continue;
 293         auto_ptr_char loc((*ep)->getLocation());
 294         try {
 295             NameIdentifier* nameid = NameIdentifierBuilder::buildNameIdentifier();
 296             nameid->setName(ctx.getNameID()->getName());
 297             nameid->setFormat(ctx.getNameID()->getFormat());
 298             nameid->setNameQualifier(ctx.getNameID()->getNameQualifier());
 299             saml1::Subject* subject = saml1::SubjectBuilder::buildSubject();
 300             subject->setNameIdentifier(nameid);
 301             saml1p::AttributeQuery* query = saml1p::AttributeQueryBuilder::buildAttributeQuery();
 302             query->setSubject(subject);
 303             query->setResource(relyingParty->getXMLString("entityID").second);
 304             for (vector<AttributeDesignator*>::const_iterator ad = m_SAML1Designators.begin(); ad!=m_SAML1Designators.end(); ++ad)
 305                 query->getAttributeDesignators().push_back((*ad)->cloneAttributeDesignator());
 306             Request* request = RequestBuilder::buildRequest();
 307             request->setAttributeQuery(query);
 308             request->setMinorVersion(version);
 309
 310             SAML1SOAPClient client(soaper, false);
 311             client.sendSAML(request, application.getId(), mcc, loc.get());
 312             response = client.receiveSAML();
 313         }
 314         catch (exception& ex) {
 315             m_log.error("exception during SAML query to %s: %s", loc.get(), ex.what());
 316             soaper.reset();
 317         }
 318     }
 319
 320     if (!response) {
 321         m_log.error("unable to obtain a SAML response from attribute authority");
 322         return false;
 323     }
 324     else if (!response->getStatus() || !response->getStatus()->getStatusCode() || response->getStatus()->getStatusCode()->getValue()==NULL ||
 325             *(response->getStatus()->getStatusCode()->getValue()) != saml1p::StatusCode::SUCCESS) {
 326         delete response;
 327         m_log.error("attribute authority returned a SAML error");
 328         return true;
 329     }
 330
 331     const vector<saml1::Assertion*>& assertions = const_cast<const saml1p::Response*>(response)->getAssertions();
 332     if (assertions.empty()) {
 333         delete response;
 334         m_log.warn("response from attribute authority was empty");
 335         return true;
 336     }
 337     else if (assertions.size()>1)
 338         m_log.warn("simple resolver only supports one assertion in the query response");
 339
 340     auto_ptr<saml1p::Response> wrapper(response);
 341     saml1::Assertion* newtoken = assertions.front();
 342
 343     pair<bool,bool> signedAssertions = relyingParty->getBool("requireSignedAssertions");
 344     if (!newtoken->getSignature() && signedAssertions.first && signedAssertions.second) {
 345         m_log.error("assertion unsigned, rejecting it based on signedAssertions policy");
 346         return true;
 347     }
 348
 349     try {
 350         // We're going to insist that the assertion issuer is the same as the peer.
 351         // Reset the policy's message bits and extract them from the assertion.
 352         policy.reset(true);
 353         policy.setMessageID(newtoken->getAssertionID());
 354         policy.setIssueInstant(newtoken->getIssueInstantEpoch());
 355         policy.setIssuer(newtoken->getIssuer());
 356         policy.evaluate(*newtoken);
 357
 358         // Now we can check the security status of the policy.
 359         if (!policy.isAuthenticated())
 360             throw SecurityPolicyException("Security of SAML 1.x query result not established.");
 361     }
 362     catch (exception& ex) {
 363         m_log.error("assertion failed policy validation: %s", ex.what());
 364         return true;
 365     }
 366
 367     newtoken->detach();
 368     wrapper.release();
 369     ctx.getResolvedAssertions().push_back(newtoken);
 370
 371     // Finally, extract and filter the result.
 372     try {
 373         AttributeExtractor* extractor = application.getAttributeExtractor();
 374         if (extractor) {
 375             Locker extlocker(extractor);
 376             extractor->extractAttributes(application, AA, *newtoken, ctx.getResolvedAttributes());
 377         }
 378
 379         AttributeFilter* filter = application.getAttributeFilter();
 380         if (filter) {
 381             BasicFilteringContext fc(application, ctx.getResolvedAttributes(), AA, ctx.getClassRef(), ctx.getDeclRef());
 382             Locker filtlocker(filter);
 383             filter->filterAttributes(fc, ctx.getResolvedAttributes());
 384         }
 385     }
 386     catch (exception& ex) {
 387         m_log.error("caught exception extracting/filtering attributes from query result: %s", ex.what());
 388         for_each(ctx.getResolvedAttributes().begin(), ctx.getResolvedAttributes().end(), xmltooling::cleanup<shibsp::Attribute>());
 389         ctx.getResolvedAttributes().clear();
 390     }
 391
 392     return true;
 393 }
 394
 395 bool QueryResolver::SAML2Query(QueryContext& ctx) const
 396 {
 397 #ifdef _DEBUG
 398     xmltooling::NDC ndc("query");
 399 #endif
 400
 401     const AttributeAuthorityDescriptor* AA =
 402         find_if(ctx.getEntityDescriptor()->getAttributeAuthorityDescriptors(), isValidForProtocol(samlconstants::SAML20P_NS));
 403     if (!AA) {
 404         m_log.warn("no SAML 2 AttributeAuthority role found in metadata");
 405         return false;
 406     }
 407
 408     const Application& application = ctx.getApplication();
 409     const PropertySet* relyingParty = application.getRelyingParty(ctx.getEntityDescriptor());
 410
 411     // Locate policy key.
 412     const char* policyId = m_policyId.empty() ? application.getString("policyId").second : m_policyId.c_str();
 413
 414     // Access policy properties.
 415     const PropertySet* settings = application.getServiceProvider().getPolicySettings(policyId);
 416     pair<bool,bool> validate = settings->getBool("validate");
 417
 418     pair<bool,bool> signedAssertions = relyingParty->getBool("requireSignedAssertions");
 419     pair<bool,const char*> encryption = relyingParty->getString("encryption");
 420
 421     shibsp::SecurityPolicy policy(application, NULL, validate.first && validate.second, policyId);
 422     policy.getAudiences().push_back(relyingParty->getXMLString("entityID").second);
 423     MetadataCredentialCriteria mcc(*AA);
 424     shibsp::SOAPClient soaper(policy);
 425
 426     auto_ptr_XMLCh binding(samlconstants::SAML20_BINDING_SOAP);
 427     saml2p::StatusResponseType* srt=NULL;
 428     const vector<AttributeService*>& endpoints=AA->getAttributeServices();
 429     for (vector<AttributeService*>::const_iterator ep=endpoints.begin(); !srt && ep!=endpoints.end(); ++ep) {
 430         if (!XMLString::equals((*ep)->getBinding(),binding.get())  || !(*ep)->getLocation())
 431             continue;
 432         auto_ptr_char loc((*ep)->getLocation());
 433         try {
 434             auto_ptr<saml2::Subject> subject(saml2::SubjectBuilder::buildSubject());
 435
 436             // Encrypt the NameID?
 437             if (encryption.first && (!strcmp(encryption.second, "true") || !strcmp(encryption.second, "back"))) {
 438                 auto_ptr<EncryptedID> encrypted(EncryptedIDBuilder::buildEncryptedID());
 439                 MetadataCredentialCriteria mcc(*AA);
 440                 encrypted->encrypt(
 441                     *ctx.getNameID(),
 442                     *(application.getMetadataProvider()),
 443                     mcc,
 444                     false,
 445                     relyingParty->getXMLString("encryptionAlg").second
 446                     );
 447                 subject->setEncryptedID(encrypted.release());
 448             }
 449             else {
 450                 subject->setNameID(ctx.getNameID()->cloneNameID());
 451             }
 452
 453             saml2p::AttributeQuery* query = saml2p::AttributeQueryBuilder::buildAttributeQuery();
 454             query->setSubject(subject.release());
 455             Issuer* iss = IssuerBuilder::buildIssuer();
 456             iss->setName(relyingParty->getXMLString("entityID").second);
 457             query->setIssuer(iss);
 458             for (vector<saml2::Attribute*>::const_iterator ad = m_SAML2Designators.begin(); ad!=m_SAML2Designators.end(); ++ad)
 459                 query->getAttributes().push_back((*ad)->cloneAttribute());
 460
 461             SAML2SOAPClient client(soaper, false);
 462             client.sendSAML(query, application.getId(), mcc, loc.get());
 463             srt = client.receiveSAML();
 464         }
 465         catch (exception& ex) {
 466             m_log.error("exception during SAML query to %s: %s", loc.get(), ex.what());
 467             soaper.reset();
 468         }
 469     }
 470
 471     if (!srt) {
 472         m_log.error("unable to obtain a SAML response from attribute authority");
 473         return false;
 474     }
 475     saml2p::Response* response = dynamic_cast<saml2p::Response*>(srt);
 476     if (!response) {
 477         delete srt;
 478         m_log.error("message was not a samlp:Response");
 479         return true;
 480     }
 481     else if (!response->getStatus() || !response->getStatus()->getStatusCode() ||
 482             !XMLString::equals(response->getStatus()->getStatusCode()->getValue(), saml2p::StatusCode::SUCCESS)) {
 483         delete srt;
 484         m_log.error("attribute authority returned a SAML error");
 485         return true;
 486     }
 487
 488     const vector<saml2::Assertion*>& assertions = const_cast<const saml2p::Response*>(response)->getAssertions();
 489     if (assertions.empty()) {
 490         delete srt;
 491         m_log.warn("response from attribute authority was empty");
 492         return true;
 493     }
 494     else if (assertions.size()>1)
 495         m_log.warn("simple resolver only supports one assertion in the query response");
 496
 497     auto_ptr<saml2p::StatusResponseType> wrapper(srt);
 498     saml2::Assertion* newtoken = assertions.front();
 499
 500     if (!newtoken->getSignature() && signedAssertions.first && signedAssertions.second) {
 501         m_log.error("assertion unsigned, rejecting it based on signedAssertions policy");
 502         return true;
 503     }
 504
 505     try {
 506         // We're going to insist that the assertion issuer is the same as the peer.
 507         // Reset the policy's message bits and extract them from the assertion.
 508         policy.reset(true);
 509         policy.setMessageID(newtoken->getID());
 510         policy.setIssueInstant(newtoken->getIssueInstantEpoch());
 511         policy.setIssuer(newtoken->getIssuer());
 512         policy.evaluate(*newtoken);
 513
 514         // Now we can check the security status of the policy.
 515         if (!policy.isAuthenticated())
 516             throw SecurityPolicyException("Security of SAML 2.0 query result not established.");
 517     }
 518     catch (exception& ex) {
 519         m_log.error("assertion failed policy validation: %s", ex.what());
 520         return true;
 521     }
 522
 523     newtoken->detach();
 524     wrapper.release();
 525     ctx.getResolvedAssertions().push_back(newtoken);
 526
 527     // Finally, extract and filter the result.
 528     try {
 529         AttributeExtractor* extractor = application.getAttributeExtractor();
 530         if (extractor) {
 531             Locker extlocker(extractor);
 532             extractor->extractAttributes(application, AA, *newtoken, ctx.getResolvedAttributes());
 533         }
 534
 535         AttributeFilter* filter = application.getAttributeFilter();
 536         if (filter) {
 537             BasicFilteringContext fc(application, ctx.getResolvedAttributes(), AA, ctx.getClassRef(), ctx.getDeclRef());
 538             Locker filtlocker(filter);
 539             filter->filterAttributes(fc, ctx.getResolvedAttributes());
 540         }
 541     }
 542     catch (exception& ex) {
 543         m_log.error("caught exception extracting/filtering attributes from query result: %s", ex.what());
 544         for_each(ctx.getResolvedAttributes().begin(), ctx.getResolvedAttributes().end(), xmltooling::cleanup<shibsp::Attribute>());
 545         ctx.getResolvedAttributes().clear();
 546     }
 547
 548     return true;
 549 }
 550
 551 void QueryResolver::resolveAttributes(ResolutionContext& ctx) const
 552 {
 553 #ifdef _DEBUG
 554     xmltooling::NDC ndc("resolveAttributes");
 555 #endif
 556
 557     QueryContext& qctx = dynamic_cast<QueryContext&>(ctx);
 558     if (!qctx.doQuery()) {
 559         m_log.debug("found AttributeStatement in input to new session, skipping query");
 560         return;
 561     }
 562
 563     if (qctx.getNameID() && qctx.getEntityDescriptor()) {
 564         if (XMLString::equals(qctx.getProtocol(), samlconstants::SAML20P_NS)) {
 565             m_log.debug("attempting SAML 2.0 attribute query");
 566             SAML2Query(qctx);
 567         }
 568         else if (XMLString::equals(qctx.getProtocol(), samlconstants::SAML11_PROTOCOL_ENUM) ||
 569                 XMLString::equals(qctx.getProtocol(), samlconstants::SAML10_PROTOCOL_ENUM)) {
 570             m_log.debug("attempting SAML 1.x attribute query");
 571             SAML1Query(qctx);
 572         }
 573         else
 574             m_log.warn("SSO protocol does not allow for attribute query");
 575     }
 576     else
 577         m_log.warn("can't attempt attribute query, either no NameID or no metadata to use");
 578 }